Check rail sealing construction



May 14, 1940. G. M. GRADY ET AL CHECK RAIL SEALING QONSTRUCTSION Filed Feb. 18, 1938 YZ m 02 H 7 3/ l I, r M V 7 n J 3 8 4 3 5 m aw 3 p l m J 2 K/ 9 7 I l G I. 5 3%& m3 u 2 Invnbors George M. Grads. Heru- F Rube/r3 15 M M fitter- 16 s.

Patented May 14, 1940 UNITED STATES PATENT OFFICE CHECK RAIL SEALING CONSTRUCTION Application February 18, 1938, Serial No. 191,209

2 Claims.

Our invention relates to weather strip sealing construction for check rails of double-hung windows, and has for its object to provide effective sealing means for preventing infiltration of air where the check rails of double-hung sash come together when the window is fully closed.

It is a particular object of our invention to provide on one of the check rails of a double-hung sash an engaging member and on the other cheek rail a weather strip or weather strips which, when the check rails are brought together in closing the window contact said engaging member and produce sealing against the infiltration of outside It is a further object of our invention to so house the weather strips in a portion of the check rail which carries them, in relation to the other check rail when the window is closed and in relation to weather conditions when the window is open that rain or snow cannot come into contact with the weather strip devices.

It is a further object of our invention to provide check rail sealing means such that infiltration of air will be prevented even when the check rails are not brought into fully closing position.

The full objects and advantages of our invention will appear in connection with the detailed description thereof, and its novel features are particularly pointed out in the appended claims.

In the drawing, illustrating an application of our invention in one form:

Fig. 1 is a transverse sectional view of the double-hung sash of the window across the check rails taken on line of Fig. 2. Fig. 2 is a sectional view through one side of the window frame taken on line 2-2 of Fig. 1. Fig. 3 is a part sectional perspective view of the check rail of the lower sash in its relation to the side rail. Fig. 4 is a similar part sectional perspective view of the check rail of the upper sash in its relation to the side rail.

Referring to Fig. 2, a sub-frame ID of sheet iron or cast iron or other heavy supporting material has secured thereto the back wall I of an inner frame member having end walls l2 and I3 and inwardly-extending partitions l4 and I5 which form guide channels I6 and I! for the side rails I8 and IQ of the inner and outer sash of a doublehung window. The channels l6 and I! are limited on the inside by a central guide member which is provided with combined weather strip and contact members 2| and 22. The sash rails l8 and I9 are held in balanced position by means of spring members 23 and 25 on one side and 24 and 26 on the other.

The above-noted features relate to the frame guide members for the side rails of the two sash and do not form in and of themselves any part of the invention herein claimed other than to furnish the means for sliding support of the two window sash of a double-hung window. The upper sash 2'! is provided with a check rail 28 preferably formed of some extruded metal such as bronze or aluminum. The check rail -28 has formed thereon a ledge or flange 29 and at the bottom an ofi'set portion 30 formed with an upstanding contact member 3|. This construction provides a trough '32 close to the lower sash 33 and which is separated from it by the upstanding contact member 3| in such manner that when'the check rails are separated by the opening of the window through the sliding up of the inside sash or the sliding down of the outside sash the aforesaid trough 32 is well protected from the entrance of storm material such as rain or snow.

The check rail 34 of the lower sash 33 has a lip or flange member 35 adapted to overlie and con-' tact the flange member 29 of the upper check rail when the window is closed and the two sash rails are brought into closing engagement. The check rail 34 is further provided with a curved downwardly-projected lip 36 at the bottom and toward the outer check rail, which forms a cavity 31 opening at the bottom and in position to receive the upstanding contact member 3| formed on the check rail 28 of the upper sash, as clearly appears in Figs. 1 and 3. Within cavity 31 are a pair of inwardly-extending lips or ledges 38 and 39 and sprung into position within the cavity 31 so as to be held by said lips 38 and 39 is a U-shaped spring member 40 having connected therewith a pair of upwardly-extending flange strips 4| and 42. These strips, as shown in Fig. l, are in position to be engaged by the contact member 3| which is provided with a round edge 43, to facilitate the movement of this member between the spring strips 4| and 42. These spring strips extend entirely across the lower sash check rail 34 within cavity 31, and the upstanding contact piece 3| extends entirely across the upper sash check rail 28, so that when the check rails have been brought into closed position with the flange member 35 on check rail 34 engaging the ledge 29 on check rail 28 the contact member 3| will be positioned within cavity 31 between the weather strips 4| and 42, completely sealing the joint of the check rails from admission of outside air.

The advantages of our invention will clearly appear from the foregoing description. By the very simple arrangement of the spring weather strips 4| and 42 in the transverse cavity 31 engaging the upstanding contact member 3| the sealing function of the weather strips is made efiective merely by moving the two sash into closing position as determined by contact of members 35 and 29. The Weather strips being of pliable spring metal will adapt themselves to any irregularities of the extruded wall of upstanding contact member 3|, and these weather strips are slightly curved away from their points of con- "tact so that the member 3| always will move into and out of engagement with them in the most simple and eflicient manner. At the same time, the weather strips being housed within the transverse cavity 31, and the contact piece 3| being positioned to enter that cavity for effecting contact with the weather strips, it will be noted that this arrangement of contact piece and weather strips is such as to prevent the accumulation of water or snow or ice upon or about the weather strips to effect or modify their sealing action. It will be noted also that the contact member 3| is of some considerable depth vertically and that the weather strip spring flanges 4| and 42 are adapted to have sliding engagement with this contact member 4| over a sub- 'stantial vertical distance, so that in the event that the window is not fully closed or clamped by locking even when the parts 35 and 29 are separated some considerable distance there will still be sealing effected by the engagement of weather strip members 4| and 42, or either of *them, with the upstanding contact member 3|.

We claim:

1. A double-hung window construction embodying cross rails each provided with one por- 'tion only engageable to position the rails in closed position, a member on the lower sash rail forming a recess U-shaped in cross section and open along the bottom, an upstanding flange member on the upper sash rail positioned to enter the recess as the rails approach closed position but held out of contact with the interior 'of said recess in such closed position, and a spring member removably held within the recess en- 'gageable with both sides of the flange member as the rails approach closed position for sealing the cross rails from infiltration of air when they are in closed position and when they have not yet reached closed position.

2. A double-hung window construction emloodying cross rails each provided with one portion only engageable to position the rails in closed position, a member on the lower sash rail forming a recess U-shaped in cross section and open along the bottom and formed with inturned flanges along the edges of said recess, an upstanding fiange member in the upper sash rail positioned to enter the recess as the rails approach closed position, and held out of contact with the interior of said recess in such closed position, a U-shaped spring member engaging the flanges within the recess and thereby removably held therein, and having spring portions engageable with the sides of the flange member as the rails approach closed position for sealing the cross rails from infiltration of air when they are in closed position and when they have not yet reached closed position.

GEORGE M. GRADY. HENRY F. RUBERG. 

